Yes the vet did a scraping and said that he had an extreme allergic reaction to mites .
I do have another dog which has no problems at all .
It has only fairly recently started happening in the last year or so, with a few months in between infections.
Yes sorry Avocate is what I mean she said it was more effective against mites.
I do not particularly believe that mites are the cause, however his fur does fall out and leaves patchy fur all over the area, last time we gave him Avocate ( every 4 weeks ) bathed him, with a medicated shampoo and also gave him about 2 weeks antihistamine tables ( Piriton)
She did mention a steroid treatment if it got worse, but it did get better.
I was his bedding every week we hoover constantly and I just don't know what else to do it looks awful.